My DIC started to act funny last week, while my wife was sitting in the Wal-mart parking lot waiting on me. I think it was due to a nearly-dead battery, but I thought I'd run this by y'all.
The engine was off but the key was on, with the stereo playing for about 20-25 minutes. At one point, my wife tried to turn the key and the starter just clicked. A little while later, I got in the car and the engine started, but just barely... I think the battery was almost depleted from everything being left on. Then the DIC freaked out... my date was thrown off, and the Oil Life indicator jumped to 0% (which had been at 43% or so).
Would that be caused by a low battery? And should the battery have been depleted after only 25 minutes of use? It seems like it shouldn't have been affected so much. FWIW, none of those problems have recurred since that day.